Funding profile · Healthcare revenue cycle AI

Arintra

Two announced rounds totaling $46 million, a company-reported $51 million lifetime, and no Form D of the company’s own. The only SEC paper carrying the name was filed twice by an angel syndicate.

$51.0MTotal raised, company-reported (Aug 2026)
$25.0MSeries B, led by Define Ventures (Aug 2026)
$21.0MSeries A, led by Peak XV Partners (Aug 2025)
$386.9KCombined total of the two Gaingels Form D offerings

Data as of September 22, 2026. Company-reported figures are labeled.

Rounds at a glance

When Round Amount Investors Source
Winter 2022 Y Combinator batch Not disclosed Y Combinator YC directory
2022 to 2024 Seed, through Peak XV Surge Not disclosed Peak XV Partners (Surge); Y Combinator. A startup database dates a seed round to Mar 25, 2024 and a first round to Mar 2022 Investor statement, database
Aug 2023 SPV: Gaingels Arintra LLC $188,889 19 investors; Gaingels Management LLC Form D
Jul 2025 SPV: Gaingels Arintra 2025 LLC $197,988 12 investors; Gaingels Management LLC Form D
Aug 12, 2025 Series A $21.0M Peak XV Partners (lead); Endeavor Health Ventures, Y Combinator, Counterpart Ventures, Spider Capital, Ten13 Release, widely reported
Aug 26, 2026 Series B $25.0M Define Ventures (lead); Yale New Haven Health Center for Health Care Innovation, Endeavor Health Ventures, Y Combinator, Counterpart Ventures, Ten13, Spider Capital, Peak XV Partners Release, widely reported

What the filings show

Gaingels Arintra 2025 LLC · Form D · filed Jul 25, 2025

First sale
Jul 16, 2025
Type
Vermont LLC formed 2025, single-company vehicle
Offered
$197,988 equity
Sold
$197,988 · $0 remaining
Investors
12 · average about $16,499
Exemption
Rule 506(b)
Related persons
Paul Grossinger, manager of Gaingels Management LLC, which manages the issuer
Filing
SEC EDGAR, CIK 0002077630

Gaingels Arintra LLC · Form D · filed Aug 31, 2023

First sale
Aug 17, 2023
Type
Vermont LLC formed 2023, single-company vehicle
Offered
$188,889 equity
Sold
$188,889 · $0 remaining
Investors
19 · average about $9,942
Minimum accepted
$789
Exemption
Rule 506(b)
Related persons
David Beatty, manager of Gaingels Management LLC, which manages the issuer
Filing
SEC EDGAR, CIK 0001990528

Reading the filings

  1. Arintra has never filed a Form D.A full text search of EDGAR for the name returns exactly two documents, both Form D notices filed by Gaingels vehicles in Vermont. A company raising under Section 4(a)(2) rather than Regulation D files nothing, so the absence is evidence about paperwork, not money. It does mean the $21 million and $25 million figures rest entirely on the company’s own announcements.
  2. The syndicate closed four weeks before the press release.The 2025 vehicle recorded its first sale on Jul 16, 2025 and filed on Jul 25. The Series A was announced on Aug 12, 27 days later. The round was funded and papered before it was news, a useful reminder that announcement dates are marketing dates.
  3. Angel check size roughly doubled between rounds.In 2023, 19 investors put in $188,889, about $9,942 each, minimum $789. In 2025, 12 investors put in $197,988, about $16,499 each, no minimum stated. Fewer people, larger tickets, same total. That is what a syndicate looks like when a company stops being speculative.
  4. The 2023 vehicle points at an unannounced financing.Gaingels formed a dedicated Arintra LLC in 2023 and recorded a first sale on Aug 17. No round announcement for August 2023 appears in the record reviewed here. Something was priced between the Y Combinator batch and the Series A, and never publicized.
  5. The lifetime total does not reconcile.Arintra reports $51 million raised. A startup database puts it at $46.5 million across five rounds. Subtract the two announced rounds and the company figure implies about $5 million of pre-Series A capital, the database figure about $500,000. Neither publishes the seed amount, so the gap stays open.
  6. Two of the investors are also customers.Endeavor Health adopted the platform before it invested, and took part in both rounds. Yale New Haven Health’s innovation center joined at the Series B. A health system venture arm buying into a vendor it deploys is a validation signal and a related-party relationship at once, and reads as both.

Commercial signals

Signal Detail Source type
EHR distribution Epic Toolbox designation for fully autonomous coding, Dec 10, 2024. Listed on the athenahealth Marketplace. Partner-stated
Security HITRUST e1 certification announced Apr 17, 2026. SOC 2 and HIPAA posture asserted, no report public. Certifier
Customer survey KLAS Emerging Company Spotlight, Apr 23, 2026. Score 93 of 100, flagged limited data, with KLAS noting scores can move as more clients are interviewed. Independent
Named customers UC Davis Health, Mercyhealth, Meritus Health, Rochester Regional Health, Reid Health, Mercy Medical Center, Med First. Company-stated
Volume More than $5 billion in annual claim value, for customers said to represent over $50 billion in combined net patient revenue. Company-stated
Growth 8x year over year revenue growth, coding volume up more than 5x, 13 enterprise deals in 100 days, 100% customer retention. Headcount 150 as of Jul 2026 per a database. Company-stated
Performance claims 96% coding accuracy, 5.1% compliant revenue uplift, 43% fewer coding-related denials, 32% lower coding cost. All measured by Arintra. No independent coding audit found. Company-stated
Regulatory footprint No FDA record, registered trial, NIH or NSF award or PubMed hit. Coding software is not a regulated device. Public record
Category risk Automated coding rules have drawn False Claims Act exposure for providers. A 2025 legal alert cites a $23 million settlement by University of Colorado Health over an automated emergency department coding rule, and notes that using AI does not shift coding responsibility away from the hospital. Category context; no such allegation involving Arintra was found. Legal analysis

What to watch

  • A first Form D from Arintra itself, which would be due within 15 days of a first sale under Regulation D.
  • A third Gaingels vehicle, which has previously signaled a financing before the company did.
  • A published independent coding audit, as distinct from a customer satisfaction survey.
  • Whether the KLAS score holds once the limited data flag comes off. Fathom scored 95.5 of 100 in KLAS’s first autonomous coding report in Aug 2025.
  • Any disclosure reconciling the $51 million company figure with the $46.5 million database figure.

The Arintra story on Healthcare DiscoveryHealthcare Discovery

Related companies

  • Remedial Health: Shared investor: Gaingels. A Lagos company that sells wholesale medicine to Nigerian pharmacies and lends them the money to stock it
  • Notable Labs: Shared investor: First Round. A blood cancer company that screened drugs against a patient’s own cells to predict who would respond, in-licensed a shelved Boehringer Ingelheim compound, reached
  • Parallel Bio: Shared investor: Gaingels. Miniature human lymph nodes, grown from donated tissue and run side by side across hundreds of donors, used to test drugs and vaccines before anyone takes them
  • Curebase: Shared investor: Gaingels. A clinical trial company that turned drive-through testing lines into research sites, then closed its services arm and became a software vendor

Sources

  1. Public recordForm D, Gaingels Arintra LLC, CIK 0001990528SEC EDGAR · Aug 31, 2023
  2. Public recordForm D, Gaingels Arintra 2025 LLC, CIK 0002077630SEC EDGAR · Jul 25, 2025
  3. IndependentArintra raises $25M for AI revenue assurance platformMobiHealthNews · Aug 27, 2026
  4. IndependentArintra lands $25M Series B for autonomous medical codingDealroom · Aug 20, 2026
  5. IndependentArintra Autonomous Medical Coding 2026KLAS Research · Apr 23, 2026
  6. DatabaseArintra company profile, funding total and roundsTracxn
  7. Legal analysisAvoiding False Claims Act Landmines in AI-Assisted CodingTucker Ellis LLP · June 2025
  8. CompanyArintra Raises $25M, Series B releasePR Newswire · Aug 26, 2026
  9. CompanyArintra Raises $21M Series AArintra · Aug 12, 2025
  10. PartnerArintra now in Epic ToolboxBusiness Wire · Dec 10, 2024

Compiled from SEC and other public records and published reports as of September 22, 2026. Form D notices report offerings under Regulation D; amounts reflect the filing date. Healthcare Venture Capital Fund holds no position in Arintra. This page is not an offer to sell or a recommendation to buy any security.